My 722k rec'd L665 today. They must have found some issues with L664 that they felt were bad enough to fix before release. The new sections are very nice. They look good and respond quickly.
Couple of comments or suggestions for improvement:
-- The scrolling when viewing "by network", for example when I've selected the History Channel, and am going through the listing feels jerky. Instead of keeping the selected show always at the top, go down one-by-one. When you reach the last one shown on that 'page', scroll/jump, i.e. "Page down".
-- Once I've entered my PIN and I don't back out of DishOnline, don't make me re-enter the PIN every single time I select a show or movie. If I exit out of the DishOnline or DVR section, yeah, you can make me re-key it, but again, only once (please).
-- When viewing by network, when a network is highlighted/selected, show the name somewhere. Above the logo grid, there's plenty of room. Yes, most of the networks are obvious what they are, but 3-4 I have no clue.